Mold for bending or shaping sheets of glass.



D. J. B; BOBIERQ MOLD FOB BE NDING OR SHAPING SHEETS OI GLASS.

APPLICATION 'IILED DBO. 6, 1910.

991 ,025. I I v Patented May 2,1911

1 2 sums-51mm 1.

11.1.11. ROBIER. MOLD FOB BBNDING 0R SHAPING SHEETS OI GLASS. APPLICATION FILED DBO. 6, 1910.

' 991,025,. Patented May 2, 1911.

THE NORRIS PETERS co, wAsnmc-mu, D. c.

DESIRE JEAN BAPTISTE ROBIER, OF BRUSSELS, BELGIUM.

MOLD FOR BENDING OR- SHAPING SHEETS OF GLASS.

Specification of Letters Patent.

Patented May 2, 1911.

Application filed December 6, 1910. Serial No. 595,920.

To all whom it may concern:

I Be it known that I, DESIRE J EAN BAPTISTE ROBIER, a subject of the King of Belgium, residing at No. 52 Rue de Birmingham, in the city of Brussels, Belgium, have invented certain new and useful Improvements in Molds for Bending or Shaping Sheets of Glass, of which the following is a specification.

The present invention relates to an apparatus the object of which is to reduce the cost of manufacture of bent plate-glass or sheet-glass. The improved apparatus does away with the necessity of using a large number of molds for producing the required variety of shapes, and substitutes in their place a number of boards or sheets having a contour corresponding to the desired profile. These boards or sheets are mounted in a suitable frame and constitute transversal supports for a surface which is rigid in the transverse direction and is flexible in the longitudinal direction, or is composed of rigid longitudinal elements arranged side by side. By using profile-boards or sheets of different profiles any desired shaping surface may readily be obtained.

The accompanying drawings show by way of example a constructional form of the apparatus.

Figure l is a longitudinal section, Fig. 2 is a plan, Fig. 3 is a cross section, Fig. 4 is a view of the shaping surface, Fig. 5 is a view of a profile-sheet or board having a notched upper edge portion, Figs. 6 and 7 show various forms of profile boards having a smooth or notched edge portion.

The mold is composed of a frame a, the two sides of which are connected by a number of angle irons Z) arranged in pairs side by side. Between two irons constituting a pair there is provided a space destined to receive a profile-sheet c the upper portion of which has a contour corresponding to the curvature or profile to be produced. Upon the profile sheets 0 rests a flexible table d which consists of a number of tubes .6 connected to each other by iron wires 7 passing through the tubes in a transverse direction (Fig. 4'). This table follows the contour of the profile sheets 0 (Fig. 3) and is covered with an evener, or layer consisting of a thin sheet is preferably of perforated material upon which may be-placed a sheet of asbestos or similar material serving the same purpose. The thin sheets assume the form of the table and cover the cavities or grooves between the tubes. The table may be composed of tubes of any desired section or it may consist of a corrugated sheet or any other suitable material. It is preferable, however, to use tubes which by allowing an internal circulation of air insure a uniform expansion of the table.

Stays or cross-rods 71 arranged between the profile sheets 0 serve to maintain the sheets at a fixed distance and prevent warping of the sheets. In order to facilitate the manipulation, the frame is placed on wheels or rollers 9 running on rails it provided on the floor of the furnace in which the sheet of glass is softened.

The profile sheet 0 shown in Fig. 5 has its upper portion provided with notches j which serve to receive separate tubes 6 composing in this instance the table cl. In this case the table is not flexible since it is formed directly by tubes placed in notches 7' which are arranged according to the desired profile. The tubes are covered as before described by a sheet of iron or a sheet of asbestos or both. The notches or cavities j are slightly larger than the diameter of the tubes employed so as to allow a free expansion of the tubes.

It will be undertsood from the foregoing that by means of the present apparatus sheets of glass may be bent to any desired profile or curvature by merely changing the profile sheets or boards 0.

Claims.

1. In a mold for bending or shaping sheets of glass, a supporting frame having two side members, angle irons in pairs connecting said members, there being a space between the irons of each pair, profile sheets arranged in said spaces and a table on said profile sheets for the purpose specified.

2. In a mold for bending or shaping sheets of glass, a supporting frame having two side members, angle irons in pairs connecting said members there being a space between the irons of each pair, profile sheets arranged in said spaces, a flexible table on said profile sheets, and an evener on sald table.

3. In a mold for bending or shaping sheets of glass, a supporting frame having two side members, angle irons in pairs connecting said side members there being a space between the irons in each pair, profile sheets in said spaces, a table on said sheets composed of a series of tubes connected by.

wires passing transversely through said tubes, for the purpose stated.

4. In a mold for bending or shaping sheets of glass a supporting frame composed of side members connected by angle irons, said irons arranged in pairs having a space therebetween, a profile sheet in said space, provided with notches in its upper 10 edge, a table composed of a series of transverse tubes lying in said notches, and stays extending between said sheets for the purpose specified.

In testimony whereof I affix my signature in presence of two witnesses.

DESIRE JEAN BAPTISTE ROBIER.

lVitnesses E1). HEUsonLINo, AD. HEUsoHLING.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

